The human reproductive and endocrine system creates sperm and egg through meiosis. the joining of these gametes represents what type of reproduction

Which process is involved in growing crops? irrigation transportation recreation condensation

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled

Which describes the habitat of a frog?